{"id":1313580,"url":"https://alion.io/job/yoailabs-mainframe-developer-remote-5","title":"Mainframe Developer - Remote","company":{"id":3824455,"name":"YO AI Labs","domain":"yoailabs.com","url":"https://alion.io/company/yoailabs","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Manatal","truth_index":null},"role":"Enterprise Apps","role_family":"Enterprise Apps","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Chicago, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":100,"max":150,"currency":"USD","period":"hour","gross":null,"usd_annual":300000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"COBOL","optional":false},{"name":"CICS","optional":true},{"name":"Db2","optional":true},{"name":"JCL","optional":true},{"name":"VSAM","optional":true}],"status":"live","first_seen_at":"2026-09-26T17:45:46Z","employer_posted_date":"2026-09-26","last_verified_at":"2026-09-27T22:57:01Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"COBOL Developer - Remote\nRole Type: Contractor\nLocation: Remote\nRole Overview\nWe are seeking experienced COBOL Developers to contribute their expertise to a high-impact customer project focused on training and improving next-generation AI systems. In this role, you will apply your deep knowledge of COBOL, mainframe environments, and legacy systems to evaluate technical content, document business logic, and provide expert feedback.\nNo prior AI experience is required-your COBOL and mainframe expertise is what matters most.\nKey Responsibilities\nAnalyze and interpret existing COBOL codebases, workflows, and business logic.\nDevelop clear and accurate documentation of COBOL programs, system processes, and technical requirements.\nReview and evaluate COBOL code, pseudocode, and project scenarios for accuracy and completeness.\nIdentify edge cases, ambiguities, potential defects, and areas requiring clarification.\nAnnotate COBOL scripts and technical content to support the development of high-quality AI training datasets.\nDesign and review test cases and scenarios representing real-world COBOL and mainframe applications.\nProvide expert guidance on legacy system architecture, integrations, and dependencies.\nCollaborate with project coordinators and technical experts through clear written and verbal communication.\nEnsure all submitted technical materials meet high standards of accuracy, consistency, and completeness.\nSupport projects involving legacy-system modernization, migration, integration, or transformation where applicable.\nRequired Qualifications\nProven professional experience as a COBOL Developer or Mainframe Developer.\nStrong proficiency in COBOL programming and legacy application environments.\nExperience working with mainframe systems and related technologies.\nStrong understanding of complex legacy codebases, business rules, and system workflows.\nExcellent analytical and problem-solving skills.\nAbility to explain complex technical concepts clearly and accurately.\nStrong technical writing and documentation skills.\nExceptional attention to detail.\nAbility to work independently and manage multiple deliverables in a remote environment.\nPreferred Qualifications\nExperience with large-scale mainframe migration, modernization, or integration projects.\nFamiliarity with JCL, DB2, CICS, VSAM, or other common mainframe technologies.\nExperience reviewing or documenting legacy enterprise applications.\nExperience creating technical test scenarios or validating business logic.\nExperience working with distributed or remote technical teams.\nPrior experience contributing domain expertise to AI, data, or machine-learning projects is a plus, but not required.\nSkills\nCOBOL\nMainframe Development\nLegacy Systems\nJCL\nDB2\nCICS\nVSAM\nCode Analysis\nTechnical Documentation\nBusiness Logic Analysis\nTest Case Design\nProblem Solving\nAttention to Detail\nTechnical Communication\nRemote Collaboration","description_format":"text","description_chars":2913,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-26T17:45:46Z"}],"liveness":{"score":99,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.993,"p_room":1,"age_days":0,"expected_fill_days":13,"reasons":["conf:2","wave","velocity","win:early","comp:brand"],"computed_at":"2026-09-27T05:45:00Z"},"pay":{"stated_usd_annual":300000,"is_top_pay":true},"html_url":"https://alion.io/job/yoailabs-mainframe-developer-remote-5","json_url":"https://alion.io/job/yoailabs-mainframe-developer-remote-5.json","meta":{"generated_at":"2026-09-28T00:43:19Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":269,"day_limit":5000,"remaining_today":4731,"minute_limit":60,"resets_at":"2026-09-29T00:00:00Z"}}}